ati health assessment test bank Related

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A 70-year-old woman who loves to garden has small, flat, brown macules over her arms and hands. She asks, "What causes these liver spots?' The nurse tells her:

  • A. They are signs of decreased hematocrit related to anemia.
  • B. They are due to destruction of melanin in your skin due to exposure to the sun.
  • C. They are clusters of melanocytes that appear after prolonged sun exposure.
  • D. They are areas of hyperpigmentation related to decreased perfusion and vasoconstriction.
Correct Answer: C

Rationale: The correct answer is C because the small, flat, brown macules described are consistent with lentigines (commonly known as age or liver spots), which are clusters of melanocytes that appear after prolonged sun exposure. This explanation directly addresses the patient's question about the cause of the spots and is supported by the clinical presentation.

Choice A is incorrect because decreased hematocrit related to anemia would not cause these specific skin changes. Choice B is incorrect as destruction of melanin due to sun exposure would result in lighter spots, not dark brown macules. Choice D is incorrect because hyperpigmentation related to decreased perfusion and vasoconstriction would present differently and not primarily on sun-exposed areas like the arms and hands.